Clementia, daughter of ---. The Annals of Tewkesbury names “reginæ Clemenciæ” as the mother of “domina Johanna Walliæ, uxor Lewelini, filia regis Johannis” when recording her daughter´s death. 1
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Douglas Richardson proposed that Clemence, the wife of Nicholas de Verdun, was mother of John's illegitimate daughter Joan, who was known to be named Clemence. This remains to be proven, although Douglas presented circumstantial evidence for his proposition. At the time he made the proposition, Nicholas de Verdun's wife was thought to be Clemence de Dauntsey. She was later proven to be Clemence de Butiller/Boteler by Paul Reed.